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- Term Frequency and Inverse Documentation Frequency (TFIDF) TFIDF
- inverse document frequency 逆文档频率
- Four different feature selection methods are discussed,including Document Frequency(DF),Mutual Information(MI),X2 test(CHI),Correlation Coefficient(CC),and the correction of text categorization is compared using the algorithm of K nearest neighbor. 考察了文档频率DF、互信息MI、CHI统计、CC统计四种不同的特征选择方法;并结合K近邻算法进行分类精度上的比较.
- "Is there objective evidence that the chemistries are being analyzed by the laboratory on the documented frequency? 是否有客观证据证明实验室有按照文件规定的频率对化学药水进行分析？"
- He persuaded her to sign the document by guile. 他用欺骗手段说服她在文件上签字。
- "Is there objective evidence that the scrub/preclean chemistries are being analyzed by the laboratory on the documented frequency? 是否能证明有文件规定实验室有对刷磨/前处理化学药水分析，并规定其分析频率？"
- "Is there objective evidence that the precleaning chemistries are being analyzed by the laboratory at the documented frequency? 是否有客观证据说明前处理化学药水有被化验室按照文件规定的程序进行分析？"
- TF-IDF ( term frequency-inverse document frequency ) 词频-逆文档频率法
- He tried to enter the country with forged document. 他试图用伪造的文件进入该国。
- The police found no suspicious document whatsoever. 警察未发现任何可怀疑的文件。
- This is the inverse of his earlier proposition. 这和他早些时候提的建议截然相反。
- Please hand on the document to others. 请把这份文件依次传递给他人。
- Let me hand you these shipping document one by one. 让我把装船单据一件件地交给你吧。
- A product of a document copying process. 文件复制过程的一种产品。
- And unlocking a drawer, he took out the document. 他打开抽屉的锁，把文件拿了出来。
- This document bore his signature. 这份文件上有他的签名。
- This document carries the royal seal. 这份文件上盖有王室印章。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- The document shall be legalized at the nearest consulate. 这些文件应在就近领事馆得到认可。
- He leaves official document in his car. 他将官方文件丢在他汽车里。
